Senior Software Engineer, Cast AI
Product Foundations
Competitive salary (€6,500 – €9,000 gross, depending on the level of experience) plus separate compensation for on-call participation (passive coverage and active interventions) + Equity
More information about location
Kubernetes optimization platform
Be an early applicant
Kubernetes optimization platform
201-500 employees
Be an early applicant
Competitive salary (€6,500 – €9,000 gross, depending on the level of experience) plus separate compensation for on-call participation (passive coverage and active interventions) + Equity
More information about location
201-500 employees
Company mission
To pioneer a brighter future of cloud computing.
Role
Who you are
- Strong software engineering fundamentals: you design clean abstractions, write maintainable code, and can justify your architecture choices – not just make something work
- Production experience with Go is strongly preferred; candidates without Go should demonstrate strong systems programming skills in a comparable language
- You’ve built or operated trust-critical systems at scale – authentication/authorization, billing, or financial/accounting-adjacent data, where being wrong has real consequences
- Good understanding of API design best practices – versioning, backward compatibility, auth, idempotency, async patterns, and similar
- Strong debugging, optimization, and performance-tuning skills – including query profiling, index design, and database performance tuning beyond ORM usage
- Experience operating and optimizing systems under high load – you know how to find and fix the bottleneck, not just add more resources
- Hands-on experience with Kubernetes – you understand the core concepts (pods, services, deployments) and have deployed or debugged something on a cluster
- Experience with AI coding agents and agentic development workflows
- You’ve personally driven a complex project end-to-end
- Strong English skills, both verbal and written
- Startup mindset: adaptable, proactive, and comfortable with ambiguity
- Participate in on-call rotation for teams that require it
Desirable
- Multi-tenant identity system design – authentication, authorization, SSO
- Enterprise identity protocols – SAML, OIDC, and SCIM for enterprise account provisioning and sync
- Billing, audit-trail, notification, or feature-flag systems in production
- Experience with cloud provider pricing/billing APIs across AWS, GCP, or Azure, or tracking Spot instance availability
- High-cardinality time-series ingestion and querying at scale
- Understanding of Kubernetes internals
- CI/CD and DevOps practices experience
- Observability tooling (Prometheus, Grafana, OpenTelemetry) in production
What the job involves
- This posting covers multiple teams working on different pieces of the same trust-and-accounting problem: authentication, authorization, and SSO for every user and workload
- Billing, audit trails, notifications, and feature flags that keep the platform transparent for every customer
- Real-time cloud pricing tracking across every region and availability zone, including Spot availability and discounts
- And reporting that turns high-volume time-series data into fast, accurate answers about what the automation actually saved
- Design, build, and operate backend services in Go that other teams and customers depend on being correct
- Own features end-to-end: from design through implementation, testing, and production rollout
- Debug complex production issues involving security-, money-, or trust-critical flows
- Collaborate with product and other engineering teams to solve problems that don’t have textbook solutions
- Contribute to product direction and backlog – shape what gets built next, not just how it’s built
- ---Tools we use daily---
- Programming Language: Go
- Cloud & Orchestration: Kubernetes, AWS, GCP, Azure
- Infrastructure as Code: Terraform
- Databases & Storage: PostgreSQL, Cloud Object Storage, ClickHouse
- Messaging & APIs: GCP Pub/Sub, gRPC for internal communication, REST for public APIs
- Observability: Prometheus, Grafana, Loki, Tempo
- CI/CD & GitOps: GitLab CI with ArgoCD
Application process
- Screening call with Recruiter
- Hiring Manager interview
- Technical interview (system design)
- Live coding
- Culture Check interview with an executive
Our take
Managing cloud deployments effectively to control costs has become a priority for organizations of all sizes. Cast AI drives cloud optimization and cost reduction by using AI and machine learning to analyze a company’s cloud environment to identify the resources required for maximum performance.
Cast AI’s platform supports all three major cloud service providers; Microsoft Azure, Google Cloud, and Amazon Web Services. When cloud providers have unused machines they are typically discounted by 60-70%, however, if AWS (for example) needs that machine back, they give little warning before reclaiming it. Cast AI is able to automatically detect this, and immediately replace it, meaning companies using its platform will never experience an outage of discounted machines.
As more enterprises embrace cloud and AI technologies, Cast AI has continued to strengthen its position through global expansion and enterprise adoption. The company recently introduced OMNI Compute, a unified compute control plane designed to optimize workloads and PGU usage across cloud providers, while also surpassing a $1B valuation following strategic investment to support its long-term growth and international expansion.
Steph
Company Specialist at Welcome to the Jungle
Insights
51% employee growth in 12 months
Company
Funding (last 2 of 5 rounds)
Apr 2025
$108m
SERIES C
Nov 2023
$35m
SERIES B
Total funding: $180.7m
Company benefits
- Remote work: Enjoy the flexibility of remote-first work. While we have offices, our team is globally distributed, and remote work is fully supported
- Company stock options: Become a shareholder from day one. We offer stock options to all team members as part of our commitment to shared success.
- Annual Hackathon: Innovation is in our DNA. Join our global hackathon to collaborate, build, and explore new ideas beyond your usual role.
- Health insurance: Your well-being matters. We offer comprehensive health coverage and wellness support.
- Flexible working hours: Design a work schedule that fits your lifestyle. We trust you to manage your time effectively.
- Home office allowance: We help you create a comfortable, productive workspace with a dedicated home office stipend.
- Bonus days off: Recharge with extra paid time off beyond standard holidays – because work-life balance matters.
- Learning & development budget: Invest in yourself. We provide a budget for courses, conferences, and other learning opportunities.
- Company events & team building: From local meetups to virtual socials and team retreats, we make time to connect and celebrate.
Company HQ
Downtown Miami, Miami, FL
Leadership
Yuri Frayman
(Co-Founder & CEO)Co-founder & former CEO of ZENEDGE, Frayman Group, Viewdle, and LegalKEY Technologies. Founder & former Executive Chairman of CUJO AI. Current Director of Blumarine Group, and is a Board Member/Advisor at Koop Technologies, Secerus, and Perthera AI.
Leon Kuperman
(Co-Founder & CTO)Co-founder & former CTO of ZENEDGE, Co-founder of HostenPCI, and Founder & previous CTO of Truition. Previous CTO & Technology Advisor at CUJO AI, Vice President of Security Products OCI at Oracle, and was the President & CTO of Bidz.com. Current Board Member for OXYGEN.
Laurent Gil
(Co-Founder & President)Co-founder & former CPO of ZENEDGE. Previous CEO of Viewdle, CFO of WiPlug, and Director of IdeaCapital. Worked as a Group Architect at Oracle, and was an Advisor for both We Heart It and Cel-Fi.
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